So this is the previous life history of Nārada Muni. Nārada Muni is explaining about his previous life to Vyāsadeva. What was the previous life? The son of a maidservant. Maidservant means śūdrāṇī, not born of a brāhmaṇa family. Low class, maidservant. So from this position, Nārada Muni became the greatest muni. He is describing his own life.
Maidservant means
Appearance
Lectures
Srimad-Bhagavatam Lectures
Maidservant means śūdrāṇī, not born of a brāhmaṇa family. Low class, maidservant.
Lecture on SB 1.5.23 -- Vrndavana, August 4, 1974: